Source: The Denver Channel
http://www.thedenverchannel.com/news/18003483/detail.html
Eleven billboards [...] have gone up in metro Denver and Colorado Springs that question the existence of God.
The first one went up at E. Colfax Avenue and Quebec Street in Denver. It says, "Don't believe in God? You are not alone." The two lines sit against a blue sky backdrop.
The billboards cost $5,000 total and will be up until mid-December.
The group that started the campaign is called the Colorado Coalition of Reason or COCORE. COCORE said the billboards are not meant to offend Christians, but rather to create a more cohesive secular community of non-believers and free-thinkers.
"It simply reaches out to people who have no belief in God and are feeling isolated by the religious world around them," said Marvin Straus, co-founder of the Boulder Atheists.
"I've had feedback from people who thought it denigrated Christians. Totally untrue. It doesn't talk about Christians, or Muslims, or Hindus or any religion. It's specifically addressed to the non-believer."